ALLISON'S BRAIN TUMOR RESURFACES, WHICH COULD RESULT IN LIFE-ALTERING CONSEQUENCES FOR HER FAMILY AND FRIENDS, ON THE SIXTH SEASON FINALE OF "MEDIUM," FRIDAY, MAY 21

Guest Stars Include Teri Polo ("The West Wing") as Murder Victim Mary-Louise Graff, and Margaret Colin ("Gossip Girl") as D.A. Kelly Shuler

"It's a Wonderful Death" - When Allison's brain tumor resurfaces, its aftermath could have life-altering consequences for her friends and family, on the sixth season finale of MEDIUM, Friday, May 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Guest stars include Teri Polo ("The West Wing") as murder victim Mary-Louise Graff and Margaret Colin ("Gossip Girl") as D.A. Kelly Shuler.

SERIES REGULARS:

Allison Dubois........................ Patricia Arquette
Joe Dubois.................................... Jake Weber
District Attorney Devalos........ Miguel Sandoval
Ariel Dubois............................ Sofia Vassilieva
Bridgette Dubois............................ Maria Lark
Detective Lee Scanlon.................. David Cubitt
Marie Dubois...................... Miranda Carabello

GUEST CAST:

Lynn DiNovi.............................. Tina DiJoseph
Mary-Louise Graff............................. Teri Polo
Ryan Graff................................... Brett Davern
Lily Devalos............................... Roxanne Hart
Kelly Shuler.............................. Margaret Colin
Walter Graff..................................... Matt Roth
Clarence Denton....................... John K. Linton
DJ........................................ Christopher Duva
Shannon Mitchell................... Christina Scherer

TELEPLAY BY: Craig Sweeny and Robert Doherty

STORY BY: Craig Sweeny, Shaun Kasser and Samir Mehta

DIRECTED BY: Aaron Lipstadt

RATING: To Be Announced